Add property values

curl --request POST \
  --url https://api.plane.so/api/v1/workspaces/{workspace-slug}/projects/{project_id}/issues/{issue_id}/issue-properties/{property_id}/values/ \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '{
  "values": [
    {
      "value": "<string>"
    }
  ]
}'